Vertical Conveyor for Unit Loads The NERAK S-Conveyor EXPERTS IN VERTICAL CONVEYING
Continuous Horizontal-Vertical Conveying of Unit loads As experts in vertical conveying we offer you the most practical solution for every task. This means: cost effective in investment; reliable and durable in operation. Throughout the industry the name NERAK is synonymous with S-Conveyors in unit load handling. By combining innovation with well established and proven design techniques, NERAK have developed a classical solution. NERAK S-Conveyors have become established in logistic systems overcoming height differences with high throughputs particularly where the process is timecritical e.g. in the car industry, distribution centres and international airports check-ins. High quality specifications for materials and components ensure long term reliability with low maintenance and a complete range of in-house manufacturing facilities guarantees a continuous high quality standard. For single solutions as well as complete lines, OEMs and end users select the NERAK S-Conveyor or C-Conveyor for an efficient solution in vertical conveying. We offer the complete package from design through manufacture and assembly to final installation and commissioning. The NERAK S-Conveyor finds applications in many fields for unit load conveying. trays cartons EURO-pallets sacks shrink-wrapped goods soft packaging work pieces luggage other unpacked goods All parts are conveyed carefully and quickly. Different shapes and sizes can be accommodated without change-parts or adjustments.
Ground breaking technology for unobstructed function S-Conveyor C-Conveyor With synchronised speeds the goods are transferred smoothly from the indexing horizontal conveyor to the platform of the S-Conveyor. As it travels horizontally a solid level platform is formed for carrying loose items. FEEDING The space saving design creates an optimum layout for vertical conveying, up or down particularly when compared to an inclining belt conveyor. The continuously running system of the NERAK rubber block chains provides for vibration free, silent operation with high throughputs. Depending on product size, up to 3000 items per hour. NERAK S-Conveyors can be fabricated from aluminium, mild steel or stainless steel profiles with appropriate guarding to suit all applications and operating conditions. Large access doors are provided for maintenance and cleaning. Where a standard elevator doesn t quite fit the bill, NERAK can supply a machine tailor made to suit individual requirements. DISCHARGE At the discharge the platforms travel around the idler wheels transferring the goods smoothly onto the downstream conveyor.
A drive system for rapid transfers The NERAK unique steel cable reinforced rubber block chains used for the drive system give smooth, quiet and very high efficiency running, and without the need for lubrication provide a clean environment with extremely low maintenance requirements. For heavy duty applications platforms are attached with special brackets to the rubber block chains in order to provide an even distribution of the load. The platforms are fabricated from reinforced polyester rods with a PVC covering to provide a slip free surface. For special applications or where very small goods are to be conveyed the surface of the platforms comprises close fitting plates ensuring a smooth transfer to and from the platforms. Platform for barrels Platform for Euro-pallets Platform for motor blocks
Operational cycle Photoelectric cells detect approaching goods and stop the infeed conveyor until the platforms are in the correct position. The infeed conveyor then restarts transferring the goods smoothly onto the platform. 1 2 There must always be a gap between goods arriving on the indexing conveyor (1). If not, separation can be achieved by a gating mechanism (2) or by a and separationng conveyor (3). Where stand alone operation is required the elevators can be controlled by a small plc, alternatively when used in a production line, the photoelectric cells can be wired to a local terminal box for connection to the main control cabinet. 3
Type description S- and C-Conveyor LIGHT MEDIUM HEAVY max 30 kg max 100 kg max 200 kg HEAVY XXL 300-1500 kg lengthwise conveying LIGHT MEDIUM HEAVY max 30 kg max 100 kg max 200 kg Type S 169/33/32 S 253/33/50 S 316/43/70 S 631/55/70 A 200-1000 300-1500 600-2000 1000-1800 Steps all 100 B 462, 561, 660, 759, 858, 731, 860, 1045, 1210, 957, 1056, 1155 989, 1118 1375, (FL+150) Step 33 Step 43 Step 55 C min. B+FH+100 min. B+FH+150 min. B+FH+200 D min. 400 min. 500 min. 650 800 E Lifting heigt FL max. lenght of conveying goods FB max. width of conveying goods FHmax. hight of conveying goods I 180 260 500 460 J 210 250 340 423 K B + approx. 350 B + approx. 400 B + approx. 400 B + approx. 856 Exact dimension after fixing dimension B and E L FH + 150 FH + 250 M 204 250 340 528 O 281 330 395 420 all dimensions in mm without obligation Typ SC 169/33/32 SC 253/33/50 SC 316/43/70 A 200-1000 300-1500 600-2000 Steps all 100 B 462, 561, 660, 759, 858, 731, 860, 957, 1056, 1155 989, 1118 Step 33 Step 43 C approx. 3B to 4B D min. 400 min. 500 min. 650 E Lifting heigt FL max. lenght of conveying goods FB max. width of conveying goods FHmax. hight of conveying goods P 393 503 728 R 393 400 512 L Head hight M 204 250 340 O 281 330 395 M B J D E L C FH FL 100 D A Platform width B Platform lenght C Platform pitch D Inlet height E Lifting height FL Length of conveying goods FB Width of conveying goods FH Height of conveying goods E L D 100 P B FL R FH C v Speed m/s I K J O A O O A O 100 100 S FB C FB Types Types
Calculation of the throughput for S-Conveyors To determine the maximal throughput for an S-Conveyor first calculate the minimum platform pitch Cmin [mm] (see table). The result must be rounded up or down, so that the length is divisible by the pitch of the chain (33 mm / 43 mm / 55 mm). If the required throughput DS (Platforms/h) is less than the maximum the platform pitch can be increased (up to 2500 mm). v [m/s] x 3600 x 1000 Ds [Platforms/h] = C [mm] Note: This throughput calculation is only valid for S-Conveyors, for C-Conveyors, please refer to NERAK. 0,8 m/s Conveying speed C = 2310 C = 1848 C = 1386 C = 1155 C = 924 0,7 C = 693 0,6 0,5 C = 462 0,4 0,3 0,2 0,1 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 Throughput Ds Cmin = Platform length B + Conveying good height FH + 100 [mm]
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